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J. S, ES-TLIN." Apparatus for Drying Clay, 8:01 No. 242,903

Patented June 14,188

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UNITED STATES PATENT OFFICE.

JOHN S. ESTLIN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF TWO- THIRDS TO ISAAC W. HAYNES AND CHARLES H. STQOKWELL, BOTH OF SAME PLACE.

APPARATUS FOR DRYING CLAY, 80o.

SPECIFICATION forming part of Letters Patent No. 242,903, dated June 14, 1881. Application filed April 7, 1891. (No model.)

To all whom it may concern:

Be it known that I, JOHN S. ESTLIN, a citizen of theUnited States, residingin the city and county of Philadelphia, State of Pennsylvania,

have invented a new and useful Improvement in Apparatus for Drying Clay, See, which improvement is fully set forth in the following specification and accompanying drawings, in which-' Figure 1 is a vertical section of the drying apparatus embodying my invention. Fig. 2 is a vertical section of a portion in line as as, Fig. 1.

Similar letters of reference indicate corresponding parts in the two figures.

My invention relates to apparatus for drying clay and other materials; and it consists of a method of and means for thoroughly heating and drying air prior to introduction of the sameinto the drying-room; and also consists of the construction of the drying-room, as will be hereinafter fully set forth.

Referring to the drawings, A represents a heating chamber or room, into which air is admitted by the inlet or register a, and directed therefrom to the drying box or room B by means of a pipe 6.

Within the chamber A, at the top thereof, is suspended a piece of cloth, forming a ceiling, 0, for absorption of moisture or vapor rising from the heated air of said chamber, and above said ceiling is a circulating air-space, which communicates at opposite sides with the atmosphere for carrying off the absorbed moisture of the ceiling.

The chamber A may be heated by live or exhaust steam passed through a coil, D, within the chamber, by the heat from a pipe, E, continuous of 'the smoke-stack of the engine, and by heat of the pipe F, which extends from the drying-room B through the chamber A, and

conveys away the steam rising from the clay, 850., in the room B. By these means the air admitted into the chamber A is thoroughly heated and divested of moisture, in which condition it is forced by an air-pump or engine, Gr, communicating with the pipe 1), into the room B. Near the bottom of said room B,

which is tightly closed, excepting at the places of induction of air and eduction ofsteam, are a number of perforated pipes, H, and above the same is a perforated false bottom, J, on which the clay, &c., is placed, said pipes H the pipe b into the box B enters the pipes H,

and is directed through the perforated bottom J against and through the mass of clay, the efiect of which is to thoroughly dry the material, the steam or vapor passing off through the pipe F. Clay, &c., dried in this manner will be found to be in a spongy condition, so that it may be readily crumbled, powdered, and dissolved. When the drying operation is completed the clay may be removed by means of a hinged sliding door, L, which forms a part or entire portion of a side of the room B.

The false bottom J is hinged to the room B, or made removable therefrom, whereby access may be had to the pipe H.

The chamber K receives the hot air forced from the pipe, and is filled therewith, so that each distributing-pipe H is uniformly supplied with hot air from said chamber K.

When cold air is required it is: forced into the room B, the chamber A not being heated.

Having thus described my invention, what I- claim as new, and desire to secure by Letters Patent, is-- 1. The method of drying clay, 850., by forcing through the same a blast of hotdry air, for the purpose of gathering up or absorbing theparticles of moisture in said clay and carryin g them away, substantially as set forth.

2. The heating-chamber A, with. a moisture absorbing ceiling, substantially as and for the purpose set forth.

3. The drying-room B, having a perforated bottom, and apipe through which air is forced into said chamber, substantially as and for the purpose set forth.

4. The closed room B,having an inductionpipe for heated air, a steam-discharge, a false bottom, and a door, substantially as and for the purpose set forth.

5. The room B, with the air-receiving cham- I JOHN S. ESTLIN.

Witnesses:

JOHN A. WIEDERSHEIM, W. F. KIRGHER. 

